Patrick Asks Keanu to Participate in a Bank Robbery

Patrick asks Keanu to participate in a bank robbery.Before the robbery,he gets Keanu to sign an exclusion clause stating that Patrick is not liable for any injury during the robbery.Keanu agrees because Patrick is a professional bank robber.Keanu is shot during the robbery and sues Patrick for negligence.Which of the following is Patrick's best defense?

A) Contributory negligence because Keanu stepped into a dangerous situation
B) Voluntary assumption of risk because he signed an exclusion clause
C) Illegality because it is illegal to rob a bank
D) Any of these would work as complete defenses
E) Any of these would work as defenses,but only volenti and illegality are complete defenses